Provides are a method for performing, by a terminal in a WLAN interworking operation, handover in a wireless communication system and an apparatus supporting the same. The terminal may be instructed to perform handover from a source cell to a target cell, but may receive a handover command including a WLAN interworking configuration indication to indicate that the terminal maintains or releases a WLAN interworking configuration for a WLAN being accessed by the terminal. The terminal may attempt to perform the handover to the target cell in the state in which the terminal has maintained the WLAN interworking configuration if the WLAN interworking configuration indication indicates that the terminal maintains the WLAN interworking configuration.